- University of Antwerp: Onderzoeksdag Wiskunde 2023
- University of Antwerp: analysis and geometry seminar 2021.
- Radboud University: first dutch relativity day, 2020.
- Vienna University: relativity seminar 2019.
- Tuebingen University: geometric analysis, differential geometry, and relativity seminar 2019.
- Karlsruhe: Deutsche Mathematiker Vereinigung 2019.
- Connecticut: AMS sectional meeting 2019.